But the Fleet Foxes Facebook page page is serving up some mountain-man tea. The Seattle band posted a photo (below) of Mount Tokachi on the island of Hokkaido in Japan, dated 1962. And when one fan commented on the pic, asking if the mysterious volcano meant that there was an album on the way, Pecknold replied: "Alllllmost done."

Also, Pecknold inadvertently confirmed the band's performance at Bilbao BBK Live festival in Spain—the band's first concert in more than five years—by chatting with fans in his Instagram comments, who inquired about rumors they heard on a Spanish website.

Robin Pecknold (@robinpecknold on Instagram)

Earlier in the year, Pecknold released this track, "Swimming," and said that it doesn't reflect the vibe of the third album.